کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
3047826 1185066 2006 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Amplitude, area and duration of the compound muscle action potential change in different ways over the length of the ulnar nerve
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی عصب شناسی
پیش نمایش صفحه اول مقاله
Amplitude, area and duration of the compound muscle action potential change in different ways over the length of the ulnar nerve
چکیده انگلیسی

ObjectiveTo study physiological changes of the compound muscle action potential (CMAP) obtained from stimulation at different sites over the full length of a motor nerve and to study possible effects of anthropometrical factors.MethodsMulticentre study of ulnar motor nerve conduction in five segments to Erb’s point performed bilaterally on 100 healthy subjects aged 17–83 years.ResultsCMAP amplitude decreased linearly with conduction distance (0.31%/cm) from wrist to Erb’s point. CMAP area decreased with the square of conduction distance. Decrease in area was smaller than decrease in amplitude especially distally. CMAP duration increased linearly (0.17%/cm). Amplitude decay correlated with age, height and BMI and dispersion correlated with age and height. There were no correlations between area decay and anthropometrical factors. There was no significant inter-examiner variation.ConclusionsArea decay may be preferred to amplitude decay in the evaluation of conduction block over short segments due to smaller physiological changes and independence of anthropometrical factors. The absence of inter-examiner variation indicates that the results are robust and may be used by other laboratories.SignificanceThis study provides knowledge of physiological changes of CMAP parameters that may be of importance in the evaluation of nerve pathology, in particular conduction block.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Clinical Neurophysiology - Volume 117, Issue 9, September 2006, Pages 2085–2092
نویسندگان
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